From patchwork Sun May 5 22:15:39 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: =?utf-8?q?Philippe_Mathieu-Daud=C3=A9?= X-Patchwork-Id: 10930425 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 40B31924 for ; Sun, 5 May 2019 22:24:24 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 29FBD285E5 for ; Sun, 5 May 2019 22:24:24 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 1A8592864E; Sun, 5 May 2019 22:24:24 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-5.2 required=2.0 tests=BAYES_00,MAILING_LIST_MULTI, RCVD_IN_DNSWL_MED autolearn=ham version=3.3.1 Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1 with cipher AES256-SHA (256/256 bits)) (No client certificate requested) by mail.wl.linuxfoundation.org (Postfix) with ESMTPS id B8882285E5 for ; Sun, 5 May 2019 22:24:23 +0000 (UTC) Received: from localhost ([127.0.0.1]:47014 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1hNPYV-0002Yl-39 for patchwork-qemu-devel@patchwork.kernel.org; Sun, 05 May 2019 18:24:23 -0400 Received: from eggs.gnu.org ([209.51.188.92]:36168) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1hNPR8-0004UO-P6 for qemu-devel@nongnu.org; Sun, 05 May 2019 18:16:47 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1hNPR7-0000Dd-Pz for qemu-devel@nongnu.org; Sun, 05 May 2019 18:16:46 -0400 Received: from mx1.redhat.com ([209.132.183.28]:53402) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1hNPR2-0008SH-Qq; Sun, 05 May 2019 18:16:42 -0400 Received: from smtp.corp.redhat.com (int-mx05.intmail.prod.int.phx2.redhat.com [10.5.11.15]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id 320733082B71; Sun, 5 May 2019 22:16:37 +0000 (UTC) Received: from x1w.redhat.com (ovpn-204-58.brq.redhat.com [10.40.204.58]) by smtp.corp.redhat.com (Postfix) with ESMTPS id DCC4E7C386; Sun, 5 May 2019 22:16:30 +0000 (UTC) From: =?utf-8?q?Philippe_Mathieu-Daud=C3=A9?= To: qemu-devel@nongnu.org, Stephen Checkoway Date: Mon, 6 May 2019 00:15:39 +0200 Message-Id: <20190505221544.31568-9-philmd@redhat.com> In-Reply-To: <20190505221544.31568-1-philmd@redhat.com> References: <20190505221544.31568-1-philmd@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.15 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.45]); Sun, 05 May 2019 22:16:37 +0000 (UTC) X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-Received-From: 209.132.183.28 Subject: [Qemu-devel] [PATCH 08/13] hw/block/pflash_cfi02: Use the ldst API in pflash_write() X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Laurent Vivier , Kevin Wolf , Thomas Huth , qemu-block@nongnu.org, Peter Maydell , =?utf-8?q?Philippe_Mathieu-Daud?= =?utf-8?q?=C3=A9?= , Markus Armbruster , Max Reitz , Paolo Bonzini , =?utf-8?q?Alex_Benn=C3=A9e?= Errors-To: qemu-devel-bounces+patchwork-qemu-devel=patchwork.kernel.org@nongnu.org Sender: "Qemu-devel" X-Virus-Scanned: ClamAV using ClamSMTP The load/store API eases code review. Signed-off-by: Stephen Checkoway Message-Id: <20190426162624.55977-3-stephen.checkoway@oberlin.edu> Reviewed-by: Philippe Mathieu-Daudé Tested-by: Philippe Mathieu-Daudé [PMD: Extracted from bigger patch] Signed-off-by: Philippe Mathieu-Daudé --- hw/block/pflash_cfi02.c | 38 ++++++++------------------------------ 1 file changed, 8 insertions(+), 30 deletions(-) diff --git a/hw/block/pflash_cfi02.c b/hw/block/pflash_cfi02.c index 1e006e7bf3a..69e0086324e 100644 --- a/hw/block/pflash_cfi02.c +++ b/hw/block/pflash_cfi02.c @@ -373,38 +373,16 @@ static void pflash_write(PFlashCFI02 *pfl, hwaddr offset, goto check_unlock0; case 0xA0: trace_pflash_data_write(offset, value, width, 0); - p = pfl->storage; if (!pfl->ro) { - switch (width) { - case 1: - p[offset] &= value; - pflash_update(pfl, offset, 1); - break; - case 2: - if (be) { - p[offset] &= value >> 8; - p[offset + 1] &= value; - } else { - p[offset] &= value; - p[offset + 1] &= value >> 8; - } - pflash_update(pfl, offset, 2); - break; - case 4: - if (be) { - p[offset] &= value >> 24; - p[offset + 1] &= value >> 16; - p[offset + 2] &= value >> 8; - p[offset + 3] &= value; - } else { - p[offset] &= value; - p[offset + 1] &= value >> 8; - p[offset + 2] &= value >> 16; - p[offset + 3] &= value >> 24; - } - pflash_update(pfl, offset, 4); - break; + p = (uint8_t *)pfl->storage + offset; + if (pfl->be) { + uint64_t current = ldn_be_p(p, width); + stn_be_p(p, width, current & value); + } else { + uint64_t current = ldn_le_p(p, width); + stn_le_p(p, width, current & value); } + pflash_update(pfl, offset, width); } /* * While programming, status bit DQ7 should hold the opposite